Features 8 Channel: Independent 8 channel relay module, 8 channel external control output and active low level can control switches or sensors, etc. Baud Rate: 1200 2400 4800 9600 19200BPS, can be set by command, default 9600BPS. Circuit Protection: The DC12V relay switch supports internal circuit protection, with stable and reliable performance, easy to operate and use, and long service life. 6 Commands: The 12V 8 channel relay module supports 6 commands of On, Off, Instantaneous, Self Locking, Interlock, Delay, under the Delay, the maximum delay is 255 seconds. Settable Time: The data sending and returning time can be set, and the maximum value is 1000ms, which is suitable for more application situations. Good Durability: The low level relay module has a compact structure and uses excellent board elements that are not prone to damage or defects. Specification: Item Type: 8 Channel Relay Module Material: PCB Working Voltage: DC 12V Communication Interface: RS485 interface or network interface (optional) 6 Commands: On, Off, Instantaneous, Self Locking, Interlock, Delay, under the Delay command, the maximum delay is 255 seconds Baud Rate: 1200 2400 4800 9600 19200BPS, can be set by command, default 9600BPS Other Functions: Data transmission and return time can be set, the maximum value is 1000ms Package List: 1 x Relay Module Note: Pay attention to the correct operation. Package List 1 x Relay Module